TY  - JOUR
A1  - Krampe, Ralf-Thomas
A1  - Ericsson, Anders K.
T1  - Deliberate practice and elite musical performance
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Krampe, Ralf-Thomas
A1  - Ericsson, Anders K.
T1  - Mainting excellence : deliberate practice and elite performance in young and old pianists
Y1  - 1996
ER  -